Johnny Test - Season 5 - Eps 30: Roller Johnny
Susan and Mary turn Johnny and Dukey into girls so that they can win the grand prize at a roller derby match, but things quickly get difficult when a blow on the head gives Dukey amnesia, and he thinks that he is a real derby queen.
About Johnny Test

Title: Johnny Test
First Air Date: 2005-09-17
Last Air Date: 2014-06-18
Status: Ended
Rating: 6.3/10 (from 223 votes)
Language: EN
Seasons: 7
Total Episodes: 234
Network: Cartoon Network Teletoon
Genres: Animation, Comedy, Kids
Production Companies: Cookie Jar Entertainment, DHX Media, Warner Bros. Animation, Teletoon, Collideascope Digital Productions, Coliseum
Synopsis
Young Johnny is gung-ho and full of courage. Johnny's brainiac twin sisters, Susan and Mary, use Johnny as their guinea pig for their outrageous scientific experiments. If they can dream it up, Johnny will do it; as long as his genetically engineered super dog, Dukey, can come along.
Cast

James Arnold Taylor
Johnny Test (voice)

Maryke Hendrikse
Susan Test (voice)

Ashleigh Ball
Mary Test (voice)

Lee Tockar
The General / Bling-Bling Boy (voice)

Ian James Corlett
Hugh Test (voice)

Trevor Devall
Dukey (voice)

Kathleen Barr
Lila Test (voice)

Scott McNeil
Mr. White / Bumper (voice)

Bill Mondy
Mr. Black (voice)